Senior Core Network Engineer

Senior Core Network Engineer

Hybrid - London £500-£550 per day | Inside IR35 | Initial 3-6 Month Contract

We're currently engaged on a major network transformation programme and are looking for an experienced Senior Core Network Engineer with a strong background in large-scale enterprise or service provider environments.

This role requires a technical specialist with deep expertise in Cisco IOS-XR , Cisco NSO , and core network technologies, with a proven track record delivering complex transformation, migration, and automation programmes.

Key Experience Required

Extensive hands-on experience with Cisco IOS-XR

Strong experience developing and supporting Cisco NSO automation solutions

Delivery of large-scale network migration and transformation programmes

Production software upgrades , lifecycle management, and hardware refresh projects

Experience working within large enterprise or service provider networks

Exposure to Cisco 8000 Series platforms and modern core network architectures

Proven experience driving network automation and operational improvements

Strong design, implementation, troubleshooting, and documentation capabilities

Technical Skills

MPLS & Segment Routing (SR-MPLS)

BGP, ISIS, OSPF & EVPN

L2VPN / L3VPN

Multicast & QoS

IPv4 / IPv6

Cisco IOS-XR platform support and lifecycle management

Cisco NSO, YANG, Python, NETCONF & REST APIs

Infrastructure as Code and network automation methodologies

Contract Details

Location: Hybrid working (London or Chester)

Rate: £500-£550 per day

IR35: Inside IR35

Duration: Initial 3-6 months, with potential extension

If you have the relevant IOS-XR and NSO experience and would be interested in discussing further, please send across your latest CV together with a brief summary of your most relevant experience.

ECS Recruitment Group Ltd is acting as an Employment Business in relation to this vacancy.

AMRT1_UKTJ

...